[personal profile] eub
http://sciencenews.org/view/generic/id/64376/title/Holy_moley
Currently, the Avogadro number is set by a committee that averages the results from different experiments.

Wouldn't it be a little dispiriting to be on the committee to set the value of a physical constant? I bet they don't think of it as setting.

Though really, I have to admit, the committee is better than the platinum-iridium slug in a vault.

Wikipedia adds that the silicon sphere they're counting atoms in is cut from "a 4.8-kg single crystal of isotopically-enriched silicon (99.94% 28Si)".
This account has disabled anonymous posting.
If you don't have an account you can create one now.
HTML doesn't work in the subject.
More info about formatting

Profile

Eli

April 2017

S M T W T F S
      1
23 45 678
9101112131415
16171819202122
23242526272829
30      

Most Popular Tags

Style Credit

Expand Cut Tags

No cut tags
Page generated Feb. 25th, 2026 01:45 pm
Powered by Dreamwidth Studios